Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem está atualmente afiliado em San Francisco - Oakland - San Jose?
 ###Tabelas: CREATE TABLE t20_results (t20_results_id AUTO_INCREMENT PRIMARY KEY, Played INT, Wins INT, Losses INT, No Result INT, % Win VARCHAR) CREATE TABLE senate_time (senate_time_id AUTO_INCREMENT PRIMARY KEY, Total tenure rank INT, Uninterrupted rank INT, Name VARCHAR, State represented VARCHAR, Total tenure time VARCHAR, Uninterrupted time VARCHAR) CREATE TABLE 20th-_and_21st-century_swiss_confederation_issues (20th-_and_21st-century_swiss_confederation_issues_id AUTO_INCREMENT PRIMARY KEY, Location VARCHAR, Date INT, Denomination VARCHAR, Coinage metal VARCHAR, Mintage INT, KM number VARCHAR) CREATE TABLE television_stations (television_stations_id AUTO_INCREMENT PRIMARY KEY, City of License /Market VARCHAR, Station VARCHAR, Channel TV ( DT ) VARCHAR, Years owned VARCHAR, Current affiliation VARCHAR) CREATE TABLE 2010_draft_picks (2010_draft_picks_id AUTO_INCREMENT PRIMARY KEY, Round INT, Player VARCHAR, Position VARCHAR, Nationality VARCHAR, College/junior/club team (league) VARCHAR)  
SELECT Current affiliation FROM television_stations WHERE City of License /Market = San Francisco - Oakland - San Jose